Clinical analysis of non-acoustic lesions in internal auditory canal and cerebellopontine angle
10.16066/j.1672-7002.2017.09.006
- VernacularTitle:内耳道及桥小脑角非听神经瘤病变的临床分析
- Author:
Weidong ZHU
1
;
Yongchuan CHAI
;
Jie YANG
;
Zhihua ZHANG
;
Zhaoyan WANG
;
Hao WU
Author Information
1. 上海交通大学医学院附属第九人民医院耳鼻咽喉头颈外科
- Keywords:
Cerebellopontine Angle;
Tomography,X-Ray Computed;
Magnetic Resonance Imaging;
internal auditory canal
- From:
Chinese Archives of Otolaryngology-Head and Neck Surgery
2017;24(9):461-466
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE To analyse the diagnosis of non-acoustic lesions in internal auditory canal(IAC) and cerebellopontine angle(CPA),and discuss the effects of imaging examinationon differential diagnosis.METHODS A retrospective study was carried out in 185 patients with non-acoustic lesions of IAC and CPA from January 2001 to December 2016,in which lower cranial schwannoma,facial nerve tumor,meningioma,cholesteatoma,malignant tumor,trigeminal schwannoma,cavernous hemangioma,arachnoid cyst,lipoma were diagnosed in 65,55,25,9,9,8,6,5 and 3 patients,respectively.All patients were performed surgeries,and preoperative diagnosis and surgical approach were decided according to clinical manifestation,CT and MRI findings.Postoperative diagnosis were confirmed by pathological examination.RESULTS Total removal of lesion was achieved in 185 patients [96 men and 89 women,11-77 years old,mean age (46.4±25.6) years] and mean follow-up time was (5.1 ±3.2) years.Postoperative complication was leakage of cerebrospinal (4 patients,2.2％).4 patients with malignancy were dead and 1 patient with cholesteatoma was found recurrent during the follow-up.All kinds of non-acoustic lesions in IAC and CPA had its characteristic imaging findings.Preoperative diagnostic accuracy rate was 93.5％(173/185).CONCLUSION Accurate preoperative diagnosis has great significance in developing treatment strategy for IAC and CPA lesions;Preoperative diagnosis should be achieved according to clinical manifestation,CT and MRI findings,which can significantly improve the accuracy rate of diagnosis.
